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COVID-19 vaccines are getting closer. Should we be worried they’ve come so quickly? – ABC News

Several COVID-19 vaccine candidates are facing the last big hurdle before they could be available to the public. But previous vaccines have taken years to develop, so why are these ready so quickly, and will they be safe?

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Back in March, when the coronavirus pandemic was starting to sweep the globe, a vaccine couldn’t come quickly enough.
Now, with a locally developed vaccine showing promising results and several overseas candidates in phase 3 clinical trials the last big hurdle before they could be approved by regulators and available to the public some people are surprised at the speed at which they’ve been developed.
Previous vaccines have taken years to develop. Some diseases we’ve never found a vaccine fo…

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